Padlock



(No Model.)

D. M. THOMAS. PADLOOK No. 430,815. Patented June 24, 1890.

WVENTUR:

Jami flfovza' WITNESSES;

A TTOHNE Y8 UNITED STATES PATENT OFFICE.

DAVID M. THOMAS, OF AUDENRIED, PENNSYLVANIA.

- PAD LOC K.

SPECIFICATION forming part of Letters Patent No. 430,815, dated June 24,1890.

7 Application filed March 17, 1890. Serial No. 344,097. (No model.)

To all whom it may concern.-

Be it known that 1, DAVID M. THOMAS, residing at Audenried, Carboncounty, and State of Pennsylvania, have invented new and usefulImprovements in Padlocks, of which the following is a specification.

The object of my invention is to construct a lock of the characterstated in such a manner as to form a safe and durable fastening,practically from the danger of being picked, and which can only beunlocked when operated by those familiar with its workings; and,further, to arrange and construct the several parts so as to form asimple and effective lock, readily understood and operated, and positivein its action and ultimate result.

My invention consists in the peculiar construction and novel arrangementof the parts thereof, all of which will be hereinafter fully describedin the specification and particularly pointed out in the claims,reference being had to the accompanying drawings, in Which- Figure 1 isa front view of my improved padlock. Fig. 2is a similar viewthereof withthe cap-plate removed. Figs. 3 and 4 areeviews of the same, hereinafterspecifically referred to; and Fig. 5 is a detail perspective view of thetumbler and the locking-bar.

In the accompanying drawings, A indicates the easin g, preferablyconstructed of the form shown.

B is the shackle, pivotally secured at one end to the casing, itsopposite end being pro vided with a tonguehavinga slot, which fits inthe soeketd and is adapted to be en gaged by the beveled end of aspring-actuated locking-bolt 0, operating in a socket c and providedwith the usual shoulders c 0, arranged about the key-hole D, as shown,the said look so far as described being of the well-known construction.

Above and to the rear of the locking-bolt G, I arrange a chamber E,which consists of a central portion 6, a front section forming a'vertical socket e, a rear portion forming a vertical socket c and thehorizontal channels c 6 connecting said portions 2 6' e as most clearlyshown in Fig. 2 of the drawings.

F denotes a tumbler journaled to operate in the central portion 6 of thechamber E,

which is provided with a downwardly-projecting stud f, arranged toproject in a recessed portion g of a bar G, arranged to slide in thechannels 6 6 its ends adapted to alv t-ernately project into the sockets6 e such movement being accomplished by turning the tumbler to the rightor left, as the position of the parts may require. I

I denotes a metal ball held in the socket e, which serves to hold thebar G in locked position when the parts are adjusted to hold thelocking-bolt in a locked or unlocked position.

J denotes a metal ball, preferably of somewhat larger diameter than theball I, which, when in its normal position, seatsin the lower portion ofthe socket e to the rear of the locking-bolt C, and serves to hold samefrom being unlocked.

The tumbler G is formed with an extension which projects through thecap-plate, its outer end being preferably non-circular to receive theupper end of an operating-lever R, which also serves as the key -holeguard, being adapted to be normally adjusted over the keyhole.

The manner of operating my improved lock is as follows: \Vhen the partsare in the position shown in Fig. 2 of the drawings, they Will serve tohold the locking-bolt from being unlocked. Now, when it is desired tounlock the shackle the lock is tilted to a position shown in Fig. 3,which allows the ball I to run to the upper end of the socket e and befreed from the adjacent end of the bar G. The operator then moves thelever R to the left, which causes the lug of the tumbler to engage theedge 10 of. the bar G, and slides it across the socket 6 under theballI, as shown in dotted lines, same figure. This movement permits thelarge ball to roll to the upper end of its socket 6 The operator thenturnsthe lever to the right, causing the lug to engage the edge 20 ofthe bar and slide the same across the socket e andunder the ball J. Thelock is then turned to its normal position, which causes the small ballI to again drop in front of the end 30 of the bar, the parts being thenin the position shown in Fig. 4, which is the IOO of the proper key. Toplace the parts again into position to hold the bolt 0 from movemen t,the lock is again tilted, the ball I leaving its position and the bar Gslid to the left. The lock is then again turned to its normal position.The ball J will drop behind the bolt 0, and the bar G then slid to theright, allowing the ball I to again drop into position in front of itsend 30.

From the foregoing description, taken in connection with the drawings,it will be observed that my improved padlock in outward appearance isprecisely similar to the ordinary padlocks now in use, and itsconstruction is such that no new key or locking-bolt mechanism will berequired.

My improvements, in connection with the ordinary padlock mechanism,While making a substantial lock, which will have all the requirem entsof a padlock as to simplicity, durability, and cheapness, will renderthe same practically impossible to be operated. by any one notconversant with the interior construction.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a padlock, the combination, with the casing, the shackle, and thelocking-bolt, of a socket formed at the rear of bolt, adapted to receivethe end of said bolt when slid back, a ball, a sliding bar adapted to beextended across said socket, whereby, when said lock is tilted and theball rolled out of engagement with the locking-bolt, said bar may beslid under said ball and hold it up, and means for shifting said bar G,substantially as shown and described.

2. In a padlock, the combination, with the casing, the shackle, and thelocking-bolt, of

a chamber E, formed over said locking-bolt, a socket 6 the channel 6communicating with said chamber and socket, a tumbler j ournaled in thechamber E, a slide-bar operating in the channel, adapted to be engagedand operated by the tumbler, a ball disposed in the socket c and anoperating-handle disposed on the outside of the lock and connected to'operating above the locking-bolt, arranged to operate the sliding bar G,and a combined key-hole guard and lever connected to the tumbler tooperate the same, substantially as described.

4. In a padlock, the combination, with the casing, the shackle, and thelocking-bolt, of a tumbler disposed over said locking-bolt, sockets e efldisposcd one to each side of the tumbler, a sliding bar G, connectedwith the tumbler and adapted to be shifted in opposite directions by thereverse movements of the tumbler, a ball J, held in the socket 6 adaptedto hold the locking-bolt in locked position, said bar G adapted to holdsaid ball J in position, and a second ball I, operating in the socket12, adapted to hold the bar G in locked position when projected in thesocket 6 and means for operating the tumbler, substantially as shown anddescribed.

DAVID M. THOMAS.

Witnesses:

FRED G. DIETERICH, SoLoN O. KEMoN.

